at+own(one) - he realised his mistake 'at' his 'own' and wanted to make amends for it..
remember in the movie "king" brahmanandam scolds trisha AH TONE enti,later he AMENDS his words after nagarjuna beats him up!
!!!!!!!!!!!!!!!!!!!
don't give mnemonics using stupid tamil (or what so ever those may be ) movies !!
atone ~ at stone; imagine someone throws a stone on (at)someone else and then realizes his mistake. So, he atones.
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